fix: use local prisma binary in entrypoint (avoid npx downloading wrong version)

entrypoint.sh

@@ -2,7 +2,7 @@
 set -e
 
 echo "Running Prisma DB push to ensure tables exist..."
-npx prisma db push --accept-data-loss
+./node_modules/.bin/prisma db push --accept-data-loss
 
 echo "Starting Next.js server..."
 exec node server.js